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AJUTOOOR! DAU COROANA​

AJUTOOOR DAU COROANA class=

Răspuns :

Punctul a)
[tex] 3x=12 \implies \tt x=4 [/tex]
Punctul b)
[tex] -3x=1 \implies \tt x= -\dfrac{1}{3} [/tex]
Punctul c)
[tex] x+2=1 \implies \tt x=-1 [/tex]
Punctul d)
[tex] x-4=\dfrac{1}{2} \implies x= \dfrac{1}{2}+4 \\ \tt x= \dfrac{9}{2} [/tex]
Punctul e)
[tex] \dfrac{4}{3} x =5 \implies x= 5\cdot \dfrac{3}{4} \\ \tt x= \dfrac{15}{4} [/tex]
Punctul f)
[tex] \dfrac{5}{6} x=1 \implies \tt x= \dfrac{6}{5} [/tex]

Explicație pas cu pas:

[tex]a) \: 3x = 12 \\ x = 12 \div 3 \\ x = 4 \\ \\ b) \: - 3x = 1 \\ x = 1 \div ( - 3) \\ x = - 0.(3) \\ \\ c) \: x + 2 = 1 \\ x = 1 - 2 \\ x = - 1 \\ \\ d) \: x - 4 = \frac{1}{2} \\ x = \frac{1}{2} + {}^{2)} \frac{4}{1} \\ x = \frac{1}{2} + \frac{8}{2} \\ x = \frac{9}{2} \\ \\ e) \: \frac{4}{3} x = 5 \\ x = 5 \div \frac{4}{3} \\ x = 5 \times \frac{3}{4} \\ x = \frac{15}{4} \\ \\ f) \: \frac{5}{6} x = 1 \\ x = 1 \div \frac{5}{6} \\ x = 1 \times \frac{6}{5} \\ x = \frac{6}{5} [/tex]

Succes!